A triangle has angles measuring 45° and 75°. What is the measure of the third angle?

The sum of angles in a triangle is 180°, so 180 − 45 − 75 = 60°.

If y = 2x − 3 and x = 5, what is the value of y?

Substitute x = 5: y = 2(5) − 3 = 10 − 3 = 7.

Speed = distance ÷ time = 240 ÷ 4 = 60 mph.

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Which of the following is the prime factorization of 60?